This article describes the connection between the use of types of mental imagery by athletes and the level of their imagination. Taking the model of imagery use suggested by K. Martin, S. Moritz and C. Hall, the authors used a Russian version of “The Sport Imagery Questionnaire” (SIQ) with soccer players 8, 10 and 14 years old. The data shows that subjects with a higher level of imagination are more inclined to use mental imagery in their practice. Age differences in types of imagery usage are shown. The results indicated that mental-imagery training can result in enhanced performance among junior athletes.